- #1

- 2

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Answer in units of cm.

So I tried combining the equations p+q=15.5 and -q/p=.7 and still was unable to come up with a correct answer.. How exactly do can you find the focal length with only the magnifaction and distance?

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- Thread starter speedrsr
- Start date

- #1

- 2

- 0

Answer in units of cm.

So I tried combining the equations p+q=15.5 and -q/p=.7 and still was unable to come up with a correct answer.. How exactly do can you find the focal length with only the magnifaction and distance?

- #2

- 648

- 2

This gives q/p =0.7 and

Solve for p and q

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